EP2295158B1 - Appareil de nettoyage pour centrales thermosolaires - Google Patents

Appareil de nettoyage pour centrales thermosolaires Download PDF

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Publication number
EP2295158B1
EP2295158B1 EP10174386.2A EP10174386A EP2295158B1 EP 2295158 B1 EP2295158 B1 EP 2295158B1 EP 10174386 A EP10174386 A EP 10174386A EP 2295158 B1 EP2295158 B1 EP 2295158B1
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EP
European Patent Office
Prior art keywords
cleaning
cleaning device
brushes
arm
brush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10174386.2A
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German (de)
English (en)
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EP2295158A1 (fr
Inventor
Werner Wössner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mulag Fahrzeugwerk Heinz Woessner GmbH and Co KG
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Mulag Fahrzeugwerk Heinz Woessner GmbH and Co KG
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Publication of EP2295158A1 publication Critical patent/EP2295158A1/fr
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Publication of EP2295158B1 publication Critical patent/EP2295158B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/20—Cleaning; Removing snow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the invention relates to a device for cleaning the cross-sectionally parabolic Reflektorrinnen of solar thermal power plants.
  • a central tube is guided in the focal point of the parabolic Reflektorrinnen which absorb the light reflected by the Reflektorrinnen there, causing the flowing in the central tube heat medium, usually an oil is strongly heated, which off the Reflektorrinnen in the actual power plant for the production of electrical Electricity or another source of energy is used, usually on the classic way of vaporizing water and drive a steam turbine.
  • the efficiency of such a power plant can deteriorate significantly if the reflector surfaces are impaired in their reflectivity, for example, because they are covered with some dust, which may also apply to the heat medium conductive and the sun's rays absorbing central tube.
  • Another problem is the elevation of the axis of rotation of the reflector channels, which protrude at increasingly steep position of the reflector channel over longitudinally spaced slots in the reflector channel and complicate the cleaning, which is why the reflector channel in particular not vertical position, ie with the upper edge vertically exactly can be cleaned over the lower edge, but only with respect to the lower edge tilted backwards upper edge.
  • the cleaning device is not arranged on a cantilever arm, but in a fixed position to the vehicle, which requires that the vehicle is positioned in exact relative position to the parabolic trough. Therefore, the vehicle is rail-guided and The parabolic trough must be turned into a precisely defined washing position.
  • the cleaning heads (spray bar or rotating brush bent to the contour of the parabolic trough) are held in some sort of cantilever, but there is only one brush per cantilever and thus half of the parabolic trough, which is a correspondingly fragile and inefficient construction flexible brush body requires.
  • the washer includes two cantilever arms and each cantilever arm has a brush head attached, each comprising at least three brushes.
  • a similar tunnel washer shows the Spanish application ES 2013032 which, however, lags behind the disclosure of the European tunnel washing appliance in that only one single cylindrical rotating brush is attached to each extension arm in the Spanish application.
  • French patent application FR 2635024 shows a tunnel washer, wherein the brush head comprises three adjacent brushes, but which do not overlap each other and therefore leave a gap between them, since the three brushes - of which the outer sides are mounted on both sides - are arranged on a continuous line.
  • the cleaning device has a longer and a shorter extension arm and the longer extension arm is arranged in the advancing direction, in particular in front of the shorter extension arm, the two opposing channel areas relative to the central tube can be cleaned simultaneously in one operation.
  • the individual cleaning heads have a view in the direction of progress of the gutters, so z. B. transversely to the axis of rotation of the cleaning heads, a curved, in particular convex curved contour, which is adapted approximately to the concave contour of the curved surfaces to be cleaned.
  • the extension arms are telescopic and consist in particular of two or three articulated interconnected, each telescopic arm parts.
  • the adjusting cylinder between the arm parts which change the angular position of the arm parts to each other, are preferably arranged on the outside, ie the side with the larger intermediate angle between the two arm parts, so that the small intermediate angle remains completely free and in this area no unwanted contact between the arm Jib and the sensitive to damage central pipe must be feared.
  • At the free end of the extension arm of the cleaning head is adjustable in its inclination to the extension direction of the last arm part and also in its rotational position about the extension direction of the last arm part by 180 ° pivotally.
  • the former allows the positioning of the cleaning head according to the inclination of the surface to be cleaned.
  • the latter offers the possibility of maintaining the desired direction of rotation of the cleaning head relative to the direction of movement of the vehicle when changing the boom direction of the boom - so from the left to the right side of a carrier vehicle.
  • the cleaning takes place by means of rotating brushes which are applied to the surfaces to be cleaned and in the direction of progress, the longitudinal direction of the reflector, ie in the direction in which the central tube extends, and the additional application of a cleaning liquid, usually lime-free water , on the inner surface of the reflector troughs to be cleaned.
  • a cleaning liquid usually lime-free water
  • each cleaning head consists of rotating brushes and a spraying device, usually a spray bar arranged transversely to the progress direction, which runs over the entire width of the cleaning head and has a multiplicity of outlet openings for cleaning fluid in the transverse direction next to one another.
  • the spray bar also has at least one outlet opening, which is directed to the central tube, in particular its upper side.
  • the outlet openings can be directed directly to the surface to be cleaned.
  • the cleaning device is upstream of the brushes in the advancing direction when the brush is in a direction of rotation directed so that the bristles move in the advancing direction on the surface to be cleaned, which is generally the case.
  • the spray device is downstream of the brushes when the brush move in the contact point with the surface to be cleaned in the direction of progress, in the other case also prefixed.
  • the cleaning head comprises three rotating brushes whose axes of rotation are parallel to the tangential direction of the surface to be cleaned, ie transverse to the direction of progress.
  • the axes of rotation of the individual brushes are at an angle to each other, so that they form a total of a doubly kinked contour, which is adapted to the curvature of the surface to be cleaned in approximately.
  • the three rotating brushes partially overlap in the direction of extension to ensure that no uncleaned intermediate areas remain.
  • the bristle length is at least 12%, better 25%, better 30% of the distance of the bottom of the trough from the central tube to compensate for the curvature of the surface to be cleaned compared to the cylindrical brush.
  • the intermediate angle between the axes of rotation of the individual brushes of a cleaning head is adjustable, but preferably not automatically, since this would increase the mechanical complexity too much.
  • the middle brush on the boom in the cleaning direction is preferably mounted in front of the side brushes and in particular automatically fixed adjustable in their angular position, while the other two brushes fixed on opposite sides of this central brush and adjustably fixed and flying are.
  • At least one of the outer brushes may be displaceable in their relative position to the middle and therefore also the other outer brush, in particular in order to avoid an obstacle.
  • the obstacle could be present at greater longitudinal distances holder of this central tube, which is often formed relatively wide, so that in each case the nearest this central tube outer brush should be designed to be displaced.
  • the axis of rotation of this outer brush is rotatably mounted at the end of the cantilever carrying it, which in turn an adjustable, but not changeable during operation, angle is attached to the holder of the middle brush.
  • this cantilever is also pivotally mounted at the other end to the holder of the central brush, and moreover part of a parallelogram.
  • the one short leg of the parallelogram is hinged with its two end points on the holder of the central brush, while the other short leg of the parallelogram is formed by the extended beyond the brush addition axis of rotation of the movable outer brush.
  • a sensor such as a mounted in front of the brush movable probe rod, which may be for example the spray bar itself, or a non-contact optical sensor.
  • each brush is usually driven by a separate hydraulic motor, but preferably the hydraulic motors are connected in series with each other and not controlled separately.
  • a Abziehlippe is preferably arranged behind the brushes to deduct the remaining behind the brushes on the surface residual liquid and avoid their evaporation as possible.
  • the liquid to be deducted is additionally directed downwards and dissipated as possible over the lower edge of the surface, so drained.
  • the axes of rotation of the brushes can also be made oblique to the direction of advancement, ie not exactly 90 ° to the longitudinal direction.
  • the bristles are on the cylindrical or convex central body of such a rotating brush usually not individually, but applied in tufts.
  • the bristles are attached to a flexible bristle support plate made of a rubber-like material, which then fixed on the body, for example screwed.
  • these bristle support plates are band-shaped and in particular quasi-endless and helically wound on the central body and fixed.
  • each cleaning head at least one, better in the transverse direction to the direction of progress two, in particular non-contact, such as optical sensors or ultrasonic sensors or radar sensors, with which concise particular longitudinally extending elements of the surface to be cleaned, for example, the outer edge of the gutter to be cleaned or the center groove of the gutter to be cleaned, or even the central tube is scanned.
  • non-contact such as optical sensors or ultrasonic sensors or radar sensors
  • These sensors are connected via a control with the adjusting cylinders, the readjust the relative positions of the cleaning head to the boom and the Auslegerarmmaschine each other, including the cantilever arm to the vehicle, constantly and automatically according to the signals of the sensors.
  • the carrier vehicle also at least one sensor, preferably on each side of the base or the carrier vehicle, be present in order to scan the lateral distance of the vehicle to the surface to be cleaned and readjust, so that the vehicle always runs at such a distance to the surface to be cleaned that the surface to be cleaned is within the reachable working range for the cleaning heads.
  • the vehicle or the cleaning device at least one camera is arranged, which is directed to the rear cleaning head, and displays their images on a monitor in the cab.
  • a blow-off by means of compressed air for example by compressed air outlets along a compressed air strip, it is preferred that sucked dust sucked by a lying in the blowing direction in front of the compressed air nozzles squeegee, otherwise the whirled up dust would only at another point again on the deposit cleansing surfaces.
  • negative pressure is preferably generated in the squeegee by the so-called Ejektorhabilit, wherein the compressed air used to generate the compressed air can be simultaneously the compressed air with which the compressed air outlets are operated. This results in a very compact, small build pre-cleaning unit.
  • Another possibility is not to drain the water used for cleaning from the gutters and seep into the ground but instead catch, clean and reuse.
  • the contaminated cleaning liquid is collected at the lower edge of the surface to be cleaned, placed in a collecting container of the cleaning device and stored there for reprocessing, in particular filtering.
  • the collection would take place in an intermediate container of the cleaning device.
  • the reflector channels are composed of individual plates, between which small joints are present, which extend both in the longitudinal direction of the reflector channel and in the transverse direction thereto.
  • Another way to minimize water consumption and to improve the cleaning effect is to use water with reduced surface tension, which runs accordingly fast and before it can evaporate, to the lower edge of the reflector trough.
  • an electric field either directly in the region of the cleaning heads and / or in the region of the feeds of the cleaning fluid to the cleaning heads.
  • each cleaning head can have its own electric field generator which generates a strong electric field, in particular of at least 50 V / m, better 200 V / m.
  • Such an electric field generator can be made very small, compact and inexpensive by comprising at least one Tesla coil, ie spiral coil wound in a plane, and a radiator electrically connected to this Teslaspule, such as a spherical radiator, wherein the Tesla coil is used as a primary coil which operates opposite to a primary coil, which in turn is preferably a Tesla coil, and which is operated by a pulse generator so that the resulting resonant circuit is in resonance.
  • a cleaning vehicle which carries a described cleaning device, preferably, one, front-working, long boom arm in front of the front of the vehicle and the shorter, more backward working boom behind the cab, in particular on the bed or at the rear of the vehicle arranged.
  • the attachment to the rear is preferred because then the cargo area for arranging a tank for cleaning fluid, especially water, and optionally an intermediate container for the collected, polluted cleaning fluid is available.
  • FIG. 2a shows the initial situation, namely a single reflector trough 100 of a solar thermal power plant, the concave inner surface 100 ', the sunlight bundles on a central tube 101 in which circulates a heat transfer fluid, the remote from the reflector torrents 100 for power generation z.
  • B. is used by means of a steam turbine.
  • Reflektorrinnen 100 In solar thermal power plants such Reflektorrinnen 100 are constructed in large numbers approximately parallel to the ground by means of support frame, as in FIG. 2b represented, and its concave inner surface is to be cleaned by means of the cleaning device 1 according to the invention surface 100 ', which must be regularly freed of dust deposits in order to keep the reflectance of the surface 100' and thus the efficiency of the solar thermal power plant high.
  • FIG. 2a shows the reflector cores 100 tracked in the operation of the sun, so with its optical axis 105, the line of symmetry of the parabolic surface 100 ', facing the sun.
  • the central tube 101 through which the heat transfer medium flows is located on this optical axis at a distance in front of the reflector channel 100, supported by a central tube holder 102 which projects from the center of the reflector channel 100.
  • the entire reflector trough 100 may be about its center 109, the intersection of its cross section with the optical axis 105, to the Longitudinal direction 10 of the profile-shaped reflector channel 100 are pivoted about a joint, which is located at the top of a triangular in this view support frame 103.
  • FIG. 2a the reflector trough 100 is shown with the lowest position of the optical axis 105, in which the support frame 103 just does not project beyond the surface 100 'to be cleaned into the interior of the reflector trough 100.
  • the support frame 103 consists of longitudinally spaced 10 individual triangles, which are each provided by corresponding slots in the lower channel region 100 b below the center 109 of the reflector trough, in the reflector trough 100.
  • FIGS. 1 cleaning device 1 mounted on a cleaning vehicle 50, wherein the cleaning vehicle 50 for efficiency reasons - as in FIG. 2b shown - a reflector trough 100, for example, the in FIG. 2b top reflector trough 100, driving cleanly from left to right and then after completion of this cleaning at the left end of the trough 100 in the next alley between the Reflektorrinnen 100 next to turn at the left end, so only after a turn, einex and this next Reflektorrinne 100 then left to right cleans.
  • a reflector trough 100 for example, the in FIG. 2b top reflector trough 100
  • the supporting frames 103 are constructed on a leveled part of the substrate 104, usually a concrete base, the free and drivable streets between the parallel reflector channels 100 mostly consist of the natural substrate 104, which is not completely flat is and in addition to the natural erosion by the sun, wind, plant vegetation partially exposed etc. which causes fluctuations of the vehicle 50 driving thereon.
  • FIG. 2b shown - turn the vehicle 50 at the end of an alley and turn into the beginning of the next lane, so without long empty runs between them, which requires the pivoting of the boom arms 2a, b from the left to the right side of the vehicle 50 and vice versa.
  • the cleaning device 1 comprises - as best in the FIGS. 1a and 1b to be recognized - from a respective boom 3a, 3b, one of which is mounted in front of the front of the vehicle 50 and the other at the rear of the vehicle 50, and at their free end each carry a cleaning head 3a and 3b.
  • the cleaning vehicle 50 which, inter alia, carries a reservoir 52 for the cleaning fluid, usually decalcified water, travels in the alley between two reflector channels 100, and the lateral projection and height of the extension arms 2a, b and the inclination of the cleaning heads 3a, 3b on the respective cantilever 2a, 2b is thereby either manually or automatically controlled by the operator that the cleaning head 3a, which is attached to the longer front telescopic arm 2a, in the working position the channel area 100 a above the center 109, ie the central tube 101, the Reflector trough 100 cleans, and the other cleaning head 3b in the longitudinal direction 10 rearwardly offset simultaneously the lower trough portion 100 b, by being fixed to the rear arm 2, as this in FIG. 4a enlarged in the longitudinal direction 10 of the reflector trough 100 is shown.
  • the cleaning head 3a which is attached to the longer front telescopic arm 2a
  • the upper trough region 100a is primarily cleaned with the cleaning head 3a of the front telescopic arm 2a, since in this case the telescopic arm 2a carrying this cleaning head 3a has to run a short distance in front of the central tube 101, and this from the operator sitting in the driver's cab 51 of the cleaning vehicle 50 must be controlled clearly visible in order to avoid damage to the sensitive central tube 101, especially by the boom 2a necessarily, since such damage would lead to a shutdown of at least part of the solar thermal power plant.
  • this cleaning liquid is due to gravity also in the upper channel region 100a down, and if there is no horizontal joint between the upper and lower gutter area 100b, which in particular by attaching a cover strip 106 FIG. 4a can be achieved, this cleaning liquid flows from the upper trough portion 100a in the lower trough portion 100b and is subsequently detected by the subsequent lower cleaning head 3b and used a second time there for cleaning, as well as the cleaning head 3b and then by gravity to Lower edge 107 of the reflector trough 100 moves.
  • a catcher 28 can be collected again by a catcher 28 by dripping into a gutter 29, which is either permanently fixed over the entire length of the reflector chute 100 and connected to a drain in a collection container, or the gutter piece at the bottom of the bottom cleaning cleaning head 3b is attached, as in FIG. 4a and connected to an intermediate container 34 for collected cleaning liquid, from which the cleaning liquid in a reprocessing plant 32, which also comprises a dirt filter 33, reprocessed and the reservoir 52 can be fed again.
  • the cantilever arms 2a in a parked against the cleaning vehicle 50 parking position as used in empty runs of the vehicle 50, not too far laterally and above the vehicle 50 protrude and reached at all lying in about 8 m height upper edge of the reflector trough 100 ,
  • the actuating cylinder 7a which specifies the pivot position of the two arm parts 5a, 5b to each other about the joint 6, only the long arm 2a on the outside of the intermediate angle 9 between these two arm parts 5a, b arranged as Figure 1c shows to have the entire intermediate angle 9 for the collision-free approach to the central tube 101 available.
  • FIG. 1c is preferably the lower, so attached to the vehicle 50 and the local base of the cleaning device 1, arm 5 a telescoped, while the upper arm portion 5 b is not telescopic.
  • Figure 1c shows the lower boom 2 pulled in the telescoped and dashed in the non-telescoped position.
  • the second actuating cylinder 7b indicates the pivoting position of the cleaning head with respect to the free end of the extension arm 2a, b, viewed in the longitudinal direction 10 of the reflector channel 100, ie the direction of progress 10 of the cleaning head.
  • a sensor 20a, the contactless z. B. upper edge 108 of the reflector trough 100 scans, in particular contactless, optically scanned.
  • an analog sensor 20b for scanning the lower edge 107 of the reflector channel 100 may be arranged on the lower cleaning head 3b.
  • These sensors 20a, b are connected to a controller 35 of the cleaning device 1, which due to these signals the TeleskopierSullivan the telescopic portions 5a and / or b, and the angular position between the individual components, ie cleaning head 3a, b, cantilever 2a, b, the Arm parts 5a, b and the base of the cleaning device on the cleaning vehicle 50, automatically tracks.
  • a further sensor 22c which is not fastened to one of the cleaning heads 3a, b, but preferably to the base of the cleaning device 1, ie close to the cleaning vehicle 50 or directly to the cleaning vehicle 50, and likewise to a striking longitudinal contour of the reflector channel 100, usually the lower edge 107, scans, preferably again scans optically and non-contact.
  • the signals of such a vehicle-mounted sensor 22c can either intervene directly in the steering of the vehicle by means of the controller 35 or even only a eg audible warning signal for the driver delivered, if this with the vehicle too close to or too far away from the cleaning reflector channel 100 moves, so that the resulting distance from the boom arms 2a, can not be coped with.
  • the suspension of the vehicle 50 can be locked at least on the side on which the arms 2a, b project momentarily FIG. 1a is to recognize the rocker of a torsion additional frame 53, which is fixed with its central leg transversely at the rear or at the front of the vehicle 50 and are secured by the free-ending leg with their free ends to the wheel units whose rotation to the central leg can be locked automatically.
  • a camera 54 is mounted on the vehicle 50, which camera is directed towards the rear cleaning head 3b and whose signals are reproduced on a monitor (not shown) in the driver's cab 51.
  • the brushes 8a, b, c are preferably cylindrical only when they rotate, ie the bristles of the brushes due to the centrifugal force radially to the respective central body 18a, so the axis of rotation 8'a, b, c, are, as the bristles in the rule have such a low inherent rigidity that they hang limply down when the rotation is at a standstill.
  • the brushes 8a, b, c overlap only slightly in their longitudinal direction, namely on the outer contour of the cleaning head 3 , however, significantly more due to the angular position of the axes of rotation on the inside.
  • the existing of a cylindrical pipe section central body 18 for the central brush 8a is mounted on both sides in the free ends of a U-shaped support frame 40 and at one end via a hydraulic motor 15 rotatably driven.
  • the arm receptacle 41 In the middle of the connecting leg of this U-shaped support frame 40, the arm receptacle 41 is fixed, with the cleaning head 3a, b can be releasably attached to the free end of a cantilever arm 2a or 2b.
  • the rotational position can be changed by 180 ° and more, so that regardless of whether the boom of the cleaning vehicle 50 protrudes seen in the direction of travel to the left or to the right each of the middle brush 8a in the forward direction 10 works forward.
  • outer body 18 are at an angle to each other and also at a slight angle skewed to the middle Base body 18 and thus the axis of rotation 8'a of the central brush 8a, as viewed on the axis plane defined by these axes of rotation.
  • the cantilever 42 viewed in plan view of the axis plane - part of a parallelogram, the four struts is hinged relative to the respective adjacent strut.
  • the cantilever 42 is one of the two longer legs of the parallelogram, both of which are hinged with their adjacent ends to the support frame 40 of the central brush 8a, which thus represents a short leg of the parallelogram.
  • the other short leg of the parallelogram is formed by the central body 18 of this movable outer brush 8b extended beyond the pivot point with the cantilever arm 42.
  • An actuating cylinder 45 for example, a hydraulic cylinder, which is controlled by the control of the cleaning device, on the one hand on the support frame 40 and on the other hand on the cantilever 42 spaced from the mutual hinge point attached. By extending the actuating cylinder 45 is the
  • this front spray bar 16 extends over such a width that it can wet the entire working width of the cleaning head on the surface, and is composed for this purpose of two separate parts, which are supplied separately via supply lines 31 with liquid.
  • each cleaning head 3a, b in a spray bar on an outlet opening 22 x the outlet direction is directed to the central tube 101 in the cleaning use of the cleaning head 3a, b.
  • this is preferably the case at the lower end of the spray bar 16 of the lower outer brush 8b, while the cleaning head 3b which cleans at the bottom cleans the spray bar 16 at the upper end of the upper brush 8c.
  • the central tube 101 on which also contamination occurs, sprayed at least with cleaning liquid.
  • a separate third cleaning head with at least one rotating brush be present, which is attached to either one of the two existing cantilever arms, or is guided on a separate third boom.
  • an additional brush may be present on the above-working cleaning head 3a, which likewise rotates driven cleans the top of the central tube 101.
  • the axes of rotation 8 'a, b, c arranged either perpendicular to the longitudinal direction 10, or slightly inclined, then with the upper end running forward than with its lower end.
  • the three brushes 8a, b, c can also run one behind the other in the direction of progress 10, so that, with a corresponding different construction of the base frame of the cleaning head 3a, b, the topmost brush 8b at the front, the middle brush 8a running behind it, behind this uppermost Brush 8b and the bottom brush 8c in turn behind the middle brush 8a runs.
  • the contaminated cleaning liquid left by one brush would gravitate on the surface 100 'to be cleaned, and be picked up again by the next lower brush, whereby the cleaning liquid and the contaminants dissolved in it become active by means of the brushes towards the lower edge of the area to be cleaned be transported and the residues of cleaning liquid on the surface to be cleaned 100 'minimized.
  • one of the cantilevers would 42 project in the direction forward instead of backward.
  • FIG. 4 illustrated in which the use of the brush heads 3a, b with three brushes 8a, b, c according to the Figures 3 can be seen at the reflector trough 100, and in addition to each cleaning head 3a, b at least one sensor 20a, b, optically and non-contact in one case the upper edge and in the other case the lower edge 107 of the reflector troughs 100 scans.
  • an optical sensor 20d is present, which measures the bristle length 13 with rotating brushes 8a, b, c, or at least detected when this bristle length 13 drops below a predetermined minimum due to wear.
  • the bristles are not directly attached to the central body 18, but the bristles are fixed in bundles to flexible, in particular band-shaped bristle support plates made of plastic, and these support plates can be placed on the tubular central body 18, in particular wound, and screwed.
  • the corresponding screw holes are in the FIGS. 3b visible on the central body 18.
  • the suction air necessary for this purpose can be generated by a arranged in the suction air line compressed air ejector 27, so that for the entire dry pre-cleaning device 23 as an energy source only compressed air is needed, which is already available on board with most cleaning vehicles 50 anyway.
  • the amount of dust to be removed by the main cleaning can be drastically reduced without the dust stirred up by the compressed air outlets 24 being able to settle again elsewhere, in particular already moist areas of the reflector channel 100.
  • Such a pre-cleaning device 23 can mechanically without problems to the basic construction of the cleaning head 3a, b, so for example its support frame 40, are arranged and of course works in the direction of progress 10 even before the frontmost spray bar 16 of z. B. middle brush 8a.
  • FIG. 5 also the Abziehlippe 21 is shown behind the wet cleaning, which prevents too much liquid on the surface to be cleaned 100 'remains.
  • the presence of the Abziehlippe 21 is of course independent of the presence of the dry pre-cleaning device.
  • FIG. 5 further shows that the brushes 8a, b, c rotate such that in contact with the surface 100 'to be cleaned, the brushes move in the direction of progress 10.
  • the front spray bar 16 therefore wets the area 100 'over the entire working width of the cleaning head, while the spray bar 16' located behind it in the advancing direction causes only a subsequent additional rinsing of the area 100 ', which is purely optional.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)

Claims (20)

  1. Appareil de nettoyage (1) pour le nettoyage de surfaces profilées (100') incurvées transversalement au sens de progression (10), comprenant
    - au moins deux bras de flèche (2a, b),
    - aux extrémités desquelles se trouve resp. une tête de nettoyage (3a, b),
    - la tête de nettoyage (3a, ...) comprenant trois brosses rotatives (8a, b, c), dont les axes de rotation (8a, b, c) s'étendent parallèlement à la direction tangentielle (12) de la surface à nettoyer (100') et les axes de rotation (8'a, 8'b, 8'c) étant obliques les uns par rapport aux autres,
    caractérisé en ce que
    - la tête de nettoyage (3a, ...) est réglable dans sa position inclinée par rapport au bras de flèche (2a, b) et est fixée pivotante sur 180° autour de l'axe longitudinal (2') du bras de flèche (2a, b),
    - la brosse médiane (8a) est fixée en articulation sur le bras de flèche (2a, b),
    - les deux autres brosses (8b, c) sont fixées sur le support de la brosse médiane (8a) et sont logées sur un côté de manière flottante,
    - le corps central (18) d'au moins l'une des brosses externes (8b, c) est pivotant dans sa zone d'extrémité sur un bras de flèche (42) ou est pivotant avec un bras de flèche (42) par rapport à la brosse médiane (8a).
  2. Appareil de nettoyage selon la revendication 1,
    caractérisé en ce que
    la brosse médiane (8a) est réglable automatiquement en cours de fonctionnement sur le bras de flèche (2a) dans sa position angulaire.
  3. Appareil de nettoyage selon la revendication 1 ou 2,
    caractérisé en ce que
    - le bras de flèche (2a, b) est télescopique et se compose en particulier de deux ou trois parties de bras (5a, b) reliées de manière articulée entre elles, qui sont de préférence toutes les deux télescopiques dans leur extension longitudinale, et/ou
    - à proximité de l'articulation (6) entre les parties de bras (5a, b), il est prévu un vérin de réglage (7a, ...) qui se trouve sur la face externe donc sur la face des parties de bras (5a, b) opposées à l'angle intermédiaire le plus petit.
  4. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    - les brosses (8a, b, c) possède une longueur de poils (13) d'au moins 12 %, au mieux 25 %, au mieux 30 % de la distance (14) entre le fond de la rainure et le tube central (101), et
    - les brosses (8a, c) se chevauchent dans leur direction de défilement.
  5. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    l'angle intermédiaire (9) est réglable entre les axes de rotation (8'a, 8'b...).
  6. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    le bras de flèche (42') fait partie d'un parallélogramme avec quatre jambes de force reliées entre elles dont les deux points d'articulation d'une face courte du parallélogramme est fixée en rotation sur la fixation de la brosse moyenne (8a) et la face opposée courte du parallélogramme est formée par les corps de base (18) de la brosse moyenne (8a) s'étendant au-delà du point de rotation par rapport au bras de flèche (42), le bras de flèche (42') étant commandé de manière pivotante au moyen d'un vérin hydraulique (45) qui s'appuie de l'autre côté sur le cadre support (40) de la brosse médiane (8a).
  7. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    - dans la direction de progression (10), une barre de pulvérisation (16), en particulier une barre de pulvérisation (16) continue sur l'ensemble de la largeur est placée en amont des brosses (8a, b, c) sur l'ensemble de la largeur de la tête de nettoyage (3) et qui comprend un grand nombre d'ouvertures de sortie (22a, b.) pour le liquide de nettoyage et en particulier
    - en cas de déplacement des poils sur la surface dans la direction de progression, les ouvertures de sortie (22a, b) sont orientées de sorte que le liquide de nettoyage est pulvérisé au moins partiellement sur les brosses rotatives, si la rampe de pulvérisation (16) est disposée derrière les brosses (8a, b) ou bien la surface à nettoyer (100') quand la buse de pulvérisation (16) pulvérise sur la surface à nettoyer (100'), quand la barre de pulvérisation (16) est disposée dans la direction de progression (10) en amont des brosses (8a, b, c).
  8. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    - le bras de flèche (2a, b) est fixé au milieu de la tête de nettoyage,
    - le corps central (18) de la brosse (8) se compose de deux parties (18a, b) reliées entre elles par une articulation cruciforme (17) dont les extrémités sont reliées entre elles par un cadre support en forme de U (40') dont les extrémités sont reliées par un cadre support (40') en forme de U et les extrémités de la brosse (8) sont réglables par un vérin de réglage (7b) en étrier à distance souhaitées entre elles.
  9. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    la tête de nettoyage (3a...) comprend une lèvre de retrait (21) disposée dans la direction de progression (10) derrière les brosses (8a, b) pour le retrait du liquide de nettoyage de la surface (100') à nettoyer, tête qui est inclinée par rapport à la direction de progression (10) et dont l'extrémité supérieure est avancée plus en avant que l'extrémité inférieure.
  10. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    les axes de rotation (8'a, b...) des brosses (8a...) sont inclinées par rapport à la direction de progression (10), en particulier avec l'extrémité supérieure dans la direction de progression (10) plus vers l'avant que l'extrémité inférieure.
  11. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    - la tête de nettoyage (3a...) présente un dispositif de nettoyage pour un tube central (101) disposé éloigné des rainures profilées courbées, et en particulier
    - la barre de pulvérisation (16) présente au moins une ouverture de sortie (22x) pour le liquide de nettoyage qui est orienté en direction du tube central (101).
  12. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    - le corps central (18) de la brosse (8a) est de forme bombée en vue latérale et la garniture de brosse est enroulée et fixée en particulier vissée sur le corps central (18) sous forme d'une plaque support de poils flexible, en bande enroulée en spirale, plaque sur laquelle sont fixés les poils, ou
    - les brosses (8a...) sont des brosses cylindriques avec une longueur de poils constante dans le sens longitudinal ou présentent dans le sens longitudinal des longueurs de poils variables.
  13. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    chaque tête de nettoyage (3a) présente au moins un de préférence deux capteurs (20) sans contact à distance dans la direction transversale (11) pour la détection d'un contour prononcé s'étendant dans le sens longitudinal, en particulier des bords externes de la surface à nettoyer.
  14. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    l'appareil de nettoyage (1) comprend sur la base, qui supporte les bras de flèche (2a, b), au moins un capteur sans contact (20c) pour la détection de la distance entre l'appareil de nettoyage (1) et le bord de la surface à nettoyer (100').
  15. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    - chaque tête de nettoyage (3) présente une unité de pré-nettoyage (23) pour le nettoyage grossier, les sorties d'air comprimé (24) ou les entrées d'air aspiré (25) ou des vibrateurs, en particulier des vibrateurs à ultra-sons (26) et en particulier
    - les entrées d'air aspiré (25) disposent d'éjecteurs d'air (27) comprimé comme source d'air aspiré.
  16. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce qu'
    - au moins la tête d'aspiration (3b) travaillant plus loin vers le bas présente un dispositif de récupération (28) pour le liquide de nettoyage s'écoulant de la surface à nettoyer, qui comprend en particulier une rigole de récupération (29) et en particulier également un raccord de dépression dans la rigole de récupération (29) et en particulier
    - l'appareil de nettoyage (1) présente une installation de retraitement (32) pour le liquide de lavage sale, qui comprend en particulier un filtre à poussière (33) et un récipient intermédiaire (34) pour le liquide de nettoyage sale.
  17. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    l'appareil de nettoyage (1) comprend une commande (35) qui commande le télescopage et la position inclinée des bras de flèche (3a, b) et/ou la position inclinée des têtes de nettoyage (3a...) ainsi que la distance (14) des têtes de nettoyage avec la surface (100') à nettoyer de manière automatique en fonction des signaux des capteurs (20a,b...).
  18. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    - l'appareil de nettoyage (1), en particulier chaque tête de nettoyage (3), présente un générateur de champ E (30) qui génère un champ électrique d'au moins 50 volts par mètre, de préférence 200 volts par mètre, pour réduire la tension de surface du liquide utilisé de nettoyage, en particulier de l'eau, et en particulier
    - le générateur de champ E (30) comprend au moins une bobine Teslas (36) ainsi qu'un émetteur de rayonnement (37) relié électriquement à l'extrémité chaude de la bobine Tesla (36), en particulier une antenne isotrope.
  19. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    le générateur de champ E (30) est disposé près des conduites d'alimentation (31) pour le liquide de nettoyage aux têtes d'alimentation (3a, b), en particulier en supplément d'un générateur de champ E (30), et la conduite d'amenée (31) s'étend à travers l'oeil de la bobine Tesla (36) pour le liquide de nettoyage.
  20. Appareil de nettoyage selon l'une des revendications précédentes,
    caractérisé en ce que
    dans le cas de deux bras de flèche (2a, b) disposés les uns derrière les autres dans la direction de progression (10),
    - le bras de flèche (2a) en particulier long travaillant vers l'avant est disposé devant l'avant du véhicule (50) et le bras de flèche (2b) en particulier plus court travaillant plus loin vers l'arrière est disposé derrière la cabine du conducteur (51) en particulier sur le haillon de véhicule de nettoyage (50),
    - le véhicule (50) comprend un dispositif de blocage pour l'amortissement, lequel agit au moins sur un côté du véhicule (50), en particulier sous forme d'un cadre (53) verrouillable en torsion supplémentaire ou d'un support d'axe vertical verrouillable sur l'axe non-articulé.
EP10174386.2A 2009-09-09 2010-08-27 Appareil de nettoyage pour centrales thermosolaires Not-in-force EP2295158B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009040778A DE102009040778A1 (de) 2009-09-09 2009-09-09 Reinigungsgerät für Thermosolarkraftwerke

Publications (2)

Publication Number Publication Date
EP2295158A1 EP2295158A1 (fr) 2011-03-16
EP2295158B1 true EP2295158B1 (fr) 2013-10-09

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EP (1) EP2295158B1 (fr)
DE (1) DE102009040778A1 (fr)
ES (1) ES2439771T3 (fr)
PT (1) PT2295158E (fr)

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DE202016003871U1 (de) 2016-06-21 2016-08-12 Heinz Kempe Reinigungsvorrichtung
DE102016007589A1 (de) 2016-06-21 2017-12-21 Heinz Kempe Reinigungsvorrichtung

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ITTV20110163A1 (it) 2011-12-01 2013-06-02 Tendital Di Zanatta F & C Snc Dispositivo automatico per il lavaggio di superfici continue quali pannelli solari/fotovoltaici e vetri in facciate continue, dotato di spazzola rotante, motore, telaio e dispositivo di avanzamento caratterizzato dalla presenza di un albero di torsio
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DE102016007589A1 (de) 2016-06-21 2017-12-21 Heinz Kempe Reinigungsvorrichtung

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PT2295158E (pt) 2011-03-16
ES2439771T3 (es) 2014-01-24
EP2295158A1 (fr) 2011-03-16
DE102009040778A1 (de) 2011-03-10

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